statistics
posted by Sarah .
If the standard deviation for waiting times in a line is 5 minutes, the standard deviation for the averages of 30 randomly chosen waiting times is _____ minutes.

statistics 
PsyDAG
SEm = standard error(deviation) of the mean
SEm = SD/√n 
statistics 
poot lovato
0.9

statistics 
judy
.9

statistics 
Anonymous
0.9
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